On the contribution of particles to blue light attenuation in the sea
The attenuation of blue hght for ocean waters in the Northwest Atlantic has been modelled by adding the measured attenuation of light by particles to that of pure water. Comparison of the model predictions with measured total attenuation of downwelling light at 440 nm showed that the model slightly...
Main Authors: | , |
---|---|
Format: | Text |
Language: | English |
Published: |
Oxford University Press
1991
|
Subjects: | |
Online Access: | http://plankt.oxfordjournals.org/cgi/content/short/13/supp1/143 |
id |
fthighwire:oai:open-archive.highwire.org:plankt:13/supp1/143 |
---|---|
record_format |
openpolar |
spelling |
fthighwire:oai:open-archive.highwire.org:plankt:13/supp1/143 2023-05-15T17:45:36+02:00 On the contribution of particles to blue light attenuation in the sea Phinney, D.A. Yentsch, C.S. 1991-01-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/13/supp1/143 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/13/supp1/143 Copyright (C) 1991, Oxford University Press Articles TEXT 1991 fthighwire 2016-11-16T18:29:22Z The attenuation of blue hght for ocean waters in the Northwest Atlantic has been modelled by adding the measured attenuation of light by particles to that of pure water. Comparison of the model predictions with measured total attenuation of downwelling light at 440 nm showed that the model slightly overestimated the in situ attenuation in the clearest Case I waters and underestimated attenuation in Case II waters by ∼30%, presumably due to the presence of dissolved organic substances. In spite of this, estimates of near-surface chlorophyll concentration denved from satellite colorimetric measurements at 440 nm are highly correlated with in situ concentrations It is reasoned that errors in satellite derived chlorophyll concentrations due to dissolved organic substances found in Case II waters can be greatly reduced by using measurements in the wavelength region 520–550 nm, not wavelengths >440 nm. Text Northwest Atlantic HighWire Press (Stanford University) |
institution |
Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Articles |
spellingShingle |
Articles Phinney, D.A. Yentsch, C.S. On the contribution of particles to blue light attenuation in the sea |
topic_facet |
Articles |
description |
The attenuation of blue hght for ocean waters in the Northwest Atlantic has been modelled by adding the measured attenuation of light by particles to that of pure water. Comparison of the model predictions with measured total attenuation of downwelling light at 440 nm showed that the model slightly overestimated the in situ attenuation in the clearest Case I waters and underestimated attenuation in Case II waters by ∼30%, presumably due to the presence of dissolved organic substances. In spite of this, estimates of near-surface chlorophyll concentration denved from satellite colorimetric measurements at 440 nm are highly correlated with in situ concentrations It is reasoned that errors in satellite derived chlorophyll concentrations due to dissolved organic substances found in Case II waters can be greatly reduced by using measurements in the wavelength region 520–550 nm, not wavelengths >440 nm. |
format |
Text |
author |
Phinney, D.A. Yentsch, C.S. |
author_facet |
Phinney, D.A. Yentsch, C.S. |
author_sort |
Phinney, D.A. |
title |
On the contribution of particles to blue light attenuation in the sea |
title_short |
On the contribution of particles to blue light attenuation in the sea |
title_full |
On the contribution of particles to blue light attenuation in the sea |
title_fullStr |
On the contribution of particles to blue light attenuation in the sea |
title_full_unstemmed |
On the contribution of particles to blue light attenuation in the sea |
title_sort |
on the contribution of particles to blue light attenuation in the sea |
publisher |
Oxford University Press |
publishDate |
1991 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/13/supp1/143 |
genre |
Northwest Atlantic |
genre_facet |
Northwest Atlantic |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/13/supp1/143 |
op_rights |
Copyright (C) 1991, Oxford University Press |
_version_ |
1766148743059472384 |